A new type of Cope rearrangement involving carbon-carbon bond cleavage (or de-tbutylation) was found during the heating of 4-allyl-4-methyl-2, 6-di-t-butylsemiq
This paper presents a character table of S<sub>4</sub> wr S<sub>2</sub> wreathproduct group.Using this character table,<sup>1</sup>H or <sup>13</sup>C NMR spect